To finding the smallest word in a string, we are using the Stream Api and min() function of Java 8.

• Inside Stream(str.split(“\\s”)) function, we split the string into an array of substrings using regular expression as separator.
• Here min(s1,s2) method we compare the first string length with second string length means first word size is less than the second word.
• Now get() method return the value if present.
• Print the shortest word from string.

import java.util.Arrays;

public class ShortestWord {
	public static void main(String[] args) {
		String str = "welcome to java";
		String word = Arrays.stream(str.split("\\s")).min((s1, s2) -> Integer.compare(s1.length(), s2.length())).get();
		System.out.println("shortest word are :- " + word);
	}
}

Output :-
shortest word are :- to